Vulnerability · Published Sep 3, 2026 · Assigned by VulDB
CVE-2026-85031TOTOLINK CP450 cstecgi.cgi buffer overflow
Critical 9.9
In plain English
A critical-severity buffer overflow in CP450 from TOTOLINK. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.8%top 43.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-398296 | TOTOLINK CP450 cstecgi.cgi buffer overflow vdb-entry, technical-description
- VDB-398296 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-85031 | CVE Analysis and Report third-party-advisory
- Submit #853096 | TOTOLINK CP450 V4.1.0 Buffer Overflow third-party-advisory
- https://www.totolink.net/ product